A spatial node that has its position automatically updated by the [XRServer]. This node can be bound to a specific pose of a [XRPositionalTracker] and will automatically have its [member Node3D.transform] updated by the [XRServer]. Nodes of this type must be added as children of the [XROrigin3D] node. $DOCS_URL/tutorials/xr/index.html Returns [code]true[/code] if the [member tracker] has current tracking data for the [member pose] being tracked. Returns [code]true[/code] if the [member tracker] has been registered and the [member pose] is being tracked. Returns the [XRPose] containing the current state of the pose being tracked. This gives access to additional properties of this pose. Triggers a haptic pulse on a device associated with this interface. [param action_name] is the name of the action for this pulse. [param frequency] is the frequency of the pulse, set to [code]0.0[/code] to have the system use a default frequency. [param amplitude] is the amplitude of the pulse between [code]0.0[/code] and [code]1.0[/code]. [param duration_sec] is the duration of the pulse in seconds. [param delay_sec] is a delay in seconds before the pulse is given. The name of the pose we're bound to. Which poses a tracker supports is not known during design time. Godot defines number of standard pose names such as [code]aim[/code] and [code]grip[/code] but other may be configured within a given [XRInterface]. Enables showing the node when tracking starts, and hiding the node when tracking is lost. The name of the tracker we're bound to. Which trackers are available is not known during design time. Godot defines a number of standard trackers such as [code]left_hand[/code] and [code]right_hand[/code] but others may be configured within a given [XRInterface]. Emitted when the [member tracker] starts or stops receiving updated tracking data for the [member pose] being tracked. The [param tracking] argument indicates whether the tracker is getting updated tracking data.